On July 17, Roundhill Memory ETF declined 5.29% overnight, trading at $49.52/share with turnover of $164 million. The drop reflects continued heavy selling across the global memory and storage chip sector under multiple converging pressures.

On the news front, core constituent stocks including Micron Technology and Western Digital fell over 8%, SanDisk plunged more than 12%, and SK Hynix ADR dropped nearly 10% in the prior session, with the Korean KOSPI index triggering a circuit breaker. Market concerns over excessive AI storage chip valuations intensified as investors reassessed the sector after extended rallies. Korean prosecutors raided offices of memory interface companies including Montage Technology, Renesas, and Rambus investigating alleged price collusion, further damaging sentiment. A major brokerage also downgraded Q3 DRAM price hike expectations, citing customer resistance to 30% increases. Meanwhile, Japanese memory giant Kioxia collapsed over 51% from its June peak, highlighting the severity of the global selloff as the sector faces profit-taking and fundamental expectation revisions simultaneously.

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